External Quality Assessment of Urinary Oxalate Analysis: Three Years’ Experience
It is now widely accepted that hyperoxaluria, however mild, is a key risk factor for calcium oxalate urolithiasis and, indeed, is probably more significant than hypercalciuria in this respect (1–3). Clinical awareness of this fact has rightly led to an increased demand for urinary oxalate assays and many more laboratories are now offering this measurement. The recent availability of commercial kit procedures has greatly aided this development, particularly in those laboratories with a small workload.
KeywordsCalcium Oxalate External Quality Assessment Urinary Oxalate External Quality Assessment Scheme Oxalate Level
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